Is sleeping on polyurethane safe?

Sleeping on polyurethane is generally considered safe once the product has fully cured and off-gassed, which is why most mattresses, pillows, and mattress toppers are made from polyurethane foam. Polyurethane foam, often called memory foam, is used in millions of beds worldwide. When new, polyurethane foam can release volatile organic compounds that cause a chemical smell known as off-gassing, which can cause temporary headaches, nausea, or irritation for sensitive individuals, but this usually dissipates within a few days to a week with ventilation. Certifications like CertiPUR-US ensure that the foam is made without harmful chemicals like ozone depleters, PBDE flame retardants, mercury, lead, and heavy metals, and has low VOC emissions. Once off-gassed and covered with sheets, polyurethane foam is inert and does not pose a chronic toxicity risk. However, some people with chemical sensitivities, allergies, or asthma may prefer natural latex, wool, or organic cotton alternatives to avoid any off-gassing. For wood floors finished with polyurethane, sleeping in the room is safe after 24 hours for water-based and 3 to 5 days for oil-based. So yes, sleeping on fully cured polyurethane foam or finishes is safe for most people.